28214706 has 16 divisors (see below), whose sum is σ = 60770304. Its totient is φ = 8681424.

The previous prime is 28214689. The next prime is 28214707. The reversal of 28214706 is 60741282.

It is not an unprimeable number, because it can be changed into a prime (28214707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180786 + ... + 180941.

It is an arithmetic number, because the mean of its divisors is an integer number (3798144).

Almost surely, 2^28214706 is an apocalyptic number.

28214706 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28214706 is an abundant number, since it is smaller than the sum of its proper divisors (32555598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28214706 is a wasteful number, since it uses less digits than its factorization.

28214706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361745.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 28214706 is about 5311.7516884734. The cubic root of 28214706 is about 304.4330810854.

Adding to 28214706 its reverse (60741282), we get a palindrome (88955988).

It can be divided in two parts, 28214 and 706, that added together give a triangular number (28920 = T₂₄₀).

The spelling of 28214706 in words is "twenty-eight million, two hundred fourteen thousand, seven hundred six".